Purge through the control socket

doc/tinc.texi

@@ -1569,9 +1569,6 @@ New outgoing connections specified in @file{tinc.conf} will be made.
 Temporarily increases debug level to 5.
 Send this signal again to revert to the original level.
 
-@item WINCH
-Purges all information remembered about unreachable nodes.
-
 @end table
 
 @c ==================================================================
@@ -1854,6 +1851,9 @@ Dump a list of all meta connections with ourself.
 @item dump graph
 Dump a graph of the VPN in dotty format.
 
+@item purge
+Purges all information remembered about unreachable nodes.
+
 @end table
 
 

doc/tincctl.8.in

@@ -76,6 +76,8 @@ Dump a list of all meta connections with ourself.
 Dump a graph of the VPN in
 .Xr dotty 1
 format.
+.It purge
+Purges all information remembered about unreachable nodes.
 .El
 .Sh BUGS
 The "start", "restart", and "reload" commands are not yet implemented.

doc/tincd.8.in

@@ -98,8 +98,6 @@ will be made.
 .It INT
 Temporarily increases debug level to 5.
 Send this signal again to revert to the original level.
-.It WINCH
-Purges all information remembered about unreachable nodes.
 .El
 .Sh DEBUG LEVELS
 The tinc daemon can send a lot of messages to the syslog.

src/control.c

@@ -97,6 +97,12 @@ static void handle_control_data(struct bufferevent *event, void *data) {
 		goto respond;
 	}
 
+	if(req.type == REQ_PURGE) {
+		logger(LOG_NOTICE, _("Got '%s' command"), "purge");
+		purge();
+		goto respond;
+	}
+
 	logger(LOG_DEBUG, _("Malformed control command received"));
 	res.res_errno = EINVAL;
 

src/control_common.h

@@ -31,6 +31,7 @@ enum request_type {
 	REQ_DUMP_SUBNETS,
 	REQ_DUMP_CONNECTIONS,
 	REQ_DUMP_GRAPH,
+	REQ_PURGE,
 };
 
 #define TINC_CTL_VERSION_CURRENT 0

src/net.c

@@ -41,7 +41,7 @@
 
 /* Purge edges and subnets of unreachable nodes. Use carefully. */
 
-static void purge(void) {
+void purge(void) {
 	splay_node_t *nnode, *nnext, *enode, *enext, *snode, *snext;
 	node_t *n;
 	edge_t *e;
@@ -252,11 +252,6 @@ static void sigint_handler(int signal, short events, void *data) {
 	}
 }
 
-static void sigwinch_handler(int signal, short events, void *data) {
-	logger(LOG_NOTICE, _("Got %s signal"), strsignal(signal));
-	purge();
-}
-
 static void sighup_handler(int signal, short events, void *data) {
 	connection_t *c;
 	splay_node_t *node, *next;
@@ -333,7 +328,6 @@ int main_loop(void) {
 	struct event sigint_event;
 	struct event sigterm_event;
 	struct event sigquit_event;
-	struct event sigwinch_event;
 	struct event sigalrm_event;
 
 	cp();
@@ -348,8 +342,6 @@ int main_loop(void) {
 	signal_add(&sigterm_event, NULL);
 	signal_set(&sigquit_event, SIGQUIT, sigterm_handler, NULL);
 	signal_add(&sigquit_event, NULL);
-	signal_set(&sigwinch_event, SIGWINCH, sigwinch_handler, NULL);
-	signal_add(&sigwinch_event, NULL);
 	signal_set(&sigalrm_event, SIGALRM, sigalrm_handler, NULL);
 	signal_add(&sigalrm_event, NULL);
 
@@ -362,7 +354,6 @@ int main_loop(void) {
 	signal_del(&sigint_event);
 	signal_del(&sigterm_event);
 	signal_del(&sigquit_event);
-	signal_del(&sigwinch_event);
 	signal_del(&sigalrm_event);
 	event_del(&timeout_event);
 

src/net.h

@@ -126,7 +126,6 @@ extern listen_socket_t listen_socket[MAXSOCKETS];
 extern int listen_sockets;
 extern int keylifetime;
 extern bool do_prune;
-extern bool do_purge;
 extern char *myport;
 extern EVP_CIPHER_CTX packet_ctx;
 
@@ -156,6 +155,7 @@ extern void send_mtu_probe(struct node_t *);
 extern void handle_device_data(int, short, void *);
 extern void handle_meta_connection_data(int, short, void *);
 extern void regenerate_key();
+extern void purge(void);
 
 #ifndef HAVE_MINGW
 #define closesocket(s) close(s)

src/tincctl.c

@@ -89,6 +89,7 @@ static void usage(bool status) {
 				"    subnets                  - all known subnets in the VPN\n"
 				"    connections              - all meta connections with ourself\n"
 				"    graph                    - graph of the VPN in dotty format\n"
+				"  purge                      Purge unreachable nodes\n"
 				"\n"));
 		printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
 	}
@@ -578,6 +579,10 @@ int main(int argc, char *argv[], char *envp[]) {
 		return 1;
 	}
 
+	if(!strcasecmp(argv[optind], "purge")) {
+		return send_ctl_request_cooked(fd, REQ_PURGE, NULL, 0) != -1;
+	}
+
 	fprintf(stderr, _("Unknown command `%s'.\n"), argv[optind]);
 	usage(true);